This electronic project stereo amp is based on the STK415-090-E class H audio power amplifier hybrid IC that features a built-in power supply switching circuit. This STK415-090-E class H audio power amplifier provides high efficiency audio power amplification by controlling (switching) the supply voltage supplied to the power devices according to the detected level of the input audio signal. STK415-090-E class H audio power amplifier is pin to pin compatible with STK416-100 stereo amp.
This electronic project stereo amp will provide an 50 + 50 watts output power with 0.8 % THD , but it can provide more power , up to 80 watts with 10% THD. STK415-090-E class H audio power amplifier supports output loads from 4 up to 8 ohms and require an input DC voltage from 27 up to 60 volts.
Click here to download the full size of the above Circuit.
For 8 ohms load , voltage required by this stereo amp project are : +/- 27V for VL and +/-37V for VH .
This 2x50 watt stereo amp project must be designed so that (|VH|-|VL|) is always less than 40V when switching the power supply with the load connected. Set up the VL power supply with an offset voltage at power supply switching (VL-VO) of about 8V as an initial target.
To prevent over heating damage thermal design must be implemented and a thermoplastic adhesive resin must be used for this hybrid IC .
A value of 2.34.C/W, satisfies all required thermal resistance of the heat sink .
Electronic parts required for this 2x50 watt stereo amp electronic project are : R01, R02 1.5k ; R03, R04 100 /1W , R05, R06 56k ; R08, R09 4.7 /1W ; R11, R12 4.7, R14,R15 560 ; R18, R19 56k ; R21, R22 1k ; R24, R26 0.22 10%, 5W ; C01, C02 100.F/100V ; C03, C04 100.F/50V ; C05, C06 100.F/ 100V ; C07, C08 3pF; C10, C11 0.1.F; C13, C14 22.F/10V ; C16, C17 2.2.F/50V ; C19, C20 470pF ; C22, C23 100pF ; D01, D02 15V ; D03, D04 3A/60V ; L01, L02 3.H .
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
characters left: